| HDX-8树脂吸附咖啡因的研究 |
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| 引用本文： | 李梦耀,熊玉宝,孙琴.HDX-8树脂吸附咖啡因的研究[J].应用化工,2006,35(12):907-909,917. |
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| 作者姓名： | 李梦耀 熊玉宝 孙琴 |
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| 作者单位： | 长安大学,环境科学与工程学院,陕西,西安,710054 |
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| 摘 要： | 研究了HDX-8树脂对咖啡因的吸附性能。结果表明,柱长8 cm,内径1.0 cm,内装2.5 g HDX-8树脂的吸附柱,静态条件下,在pH 2~7盐酸介质中,对咖啡因具有良好的吸附性能,最大静态吸附量为17.5 mg咖啡因/g树脂。等温吸附符合Freund lich方程式,相关系数在0.99以上;当咖啡因平衡浓度≥3.1μg/mL(起始浓度≥40μg/mL)时,吸附还符合Langmu ir等温式。负载柱可用40%乙醇完全洗脱。
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| 关 键 词： | HDX-8树脂 咖啡因 吸附 |
| 文章编号： | 1671-3206（2006）12-0907-03 |
| 收稿时间： | 2006-11-01 |
| 修稿时间： | 2006-11-01 |
Study on the adsorption of HDX-8 resin for caffeine |
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| LI Meng-yao,XIONG Yu-bao,SUN Qin.Study on the adsorption of HDX-8 resin for caffeine[J].Applied chemical industry,2006,35(12):907-909,917. |
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| Authors: | LI Meng-yao XIONG Yu-bao SUN Qin |
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| Abstract: | The adsorption properties of HDX-8 resin for caffeine were studied in detail.The results show that in pH 2～7 HCl medium.The static adsorption capacity was 17.5 mg/g dry resin.The adsorption isotherms approximately fit the Freundlich equation with a correlation coefficient larger than 0.99 in the range of experimental concentrations.When the equilibrium concentration of caffeine is larger than 3.1 μg /mL(the initiation concentration is larger than 40 μg/mL),the adsorption isotherms also fit the Langmuir isotherm equation.Column packed with HDX-8 resin and caffeine adsorbed on HDX-8 resin can be eluted entirely with 40% alcohol solution. |
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| Keywords: | HDX-8 resin caffeine adsorption |
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